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HIGH

CVE-2025-52565

CVSS v3

7.5

HIGH

EPSS Score

0.6 %

exploit probability, as of 2026-10-18

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • github.com/opencontainers/runcGofrom 1.0.0-rc3 · fixed in 1.2.8
  • aardvark-dnsAlmaLinux:8all versions · fixed in 2:1.10.1-2.module_el8.10.0+4047+545787c4
  • buildahAlmaLinux:8all versions · fixed in 2:1.33.12-2.module_el8.10.0+4016+efd18bf8
  • buildah-testsAlmaLinux:8all versions · fixed in 2:1.33.12-2.module_el8.10.0+4047+545787c4
  • cockpit-podmanAlmaLinux:8all versions · fixed in 84.1-1.module_el8.10.0+4016+efd18bf8
  • conmonAlmaLinux:8all versions · fixed in 3:2.1.10-1.module_el8.10.0+4068+0e21408f
  • container-selinuxAlmaLinux:8all versions · fixed in 2:2.229.0-2.module_el8.10.0+3909+6e1c1eb7
  • containernetworking-pluginsAlmaLinux:8all versions · fixed in 1:1.4.0-6.module_el8.10.0+4068+0e21408f

20 more package ranges on OSV.dev

Vendor advisories

  • CVE-2025-52565 Red Hat Product Security1,229 products fixed

    runc: container escape with malicious config due to /dev/console mount and related races

  • RHSA-2026:10703 Red Hat Product Security435 products fixed

    Red Hat Security Advisory: container-tools:rhel8 security update

  • RHSA-2026:8325 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: buildah, crun, podman, runc, and skopeo security update

  • RHSA-2026:6492 Red Hat Product Security1 product fixed

    Red Hat Security Advisory: OpenShift Container Platform 4.12.87 bug fix and security update

  • RHSA-2026:4693 Red Hat Product Security227 products fixed

    Red Hat Security Advisory: container-tools:rhel8 security update

  • RHSA-2026:4531 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: runc security update

28 more advisories

Full record on NVD

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. Versions 1.0.0-rc3 through 1.2.7, 1.3.0-rc.1 through 1.3.2, and 1.4.0-rc.1 through 1.4.0-rc.2, due to insufficient checks when bind-mounting `/dev/pts/$n` to `/dev/console` inside the container, an attacker can trick runc into bind-mounting paths which would normally be made read-only or be masked onto a path that the attacker can write to. This attack is very similar in concept and application to CVE-2025-31133, except that it attacks a similar vulnerability in a different target (namely, the bind-mount of `/dev/pts/$n` to `/dev/console` as configured for all containers that allocate a console). This happens after `pivot_root(2)`, so this cannot be used to write to host files directly -- however, as with CVE-2025-31133, this can load to denial of service of the host or a container breakout by providing the attacker with a writable copy of `/proc/sysrq-trigger` or `/proc/sys/kernel/core_pattern` (respectively). This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Technical details

Published
2025-11-06

Frequently asked questions

What is CVE-2025-52565?

runc is a CLI tool for spawning and running containers according to the OCI specification. Versions 1.0.0-rc3 through 1.2.7, 1.3.0-rc.1 through 1.3.2, and 1.4.0-rc.1 through 1.4.0-rc.2, due to insufficient checks when bind-mounting `/dev/pts/$n` to `/dev/console` inside the container, an attacker can trick runc into bind-mounting paths which would normally be made read-only or be masked onto a path that the attacker can write to. This attack is very similar in concept and application to CVE-2025-31133, except that it attacks a similar vulnerability in a different target (namely, the bind-mount of `/dev/pts/$n` to `/dev/console` as configured for all containers that allocate a console). This happens after `pivot_root(2)`, so this cannot be used to write to host files directly -- however, as with CVE-2025-31133, this can load to denial of service of the host or a container breakout by providing the attacker with a writable copy of `/proc/sysrq-trigger` or `/proc/sys/kernel/core_pattern` (respectively). This issue is fixed in versions 1.2.8, 1.3.3 and 1.4.0-rc.3.

Is CVE-2025-52565 actively exploited?

Active exploitation of CVE-2025-52565 has not been confirmed. Its EPSS score was 0.6% on 2026-10-18, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-52565?

CVE-2025-52565 has a CVSS v3 base score of 7.5 (HIGH severity).

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